@article{FAA_1985_19_4_a13,
     author = {V. M. Deundyak and B. J. Steinberg},
     title = {Index of convolution operators with slowly varying coefficients on {Abelian} groups},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {84--85},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1985_19_4_a13/}
}